Amid the coronavirus crisis, the market has slumped more than global peers. The Nifty index, this month slipped nearly 27 percent, worse than 2008. Last week, indices hit their lowest levels since May 2016.

Cashing in on a market crash is quite a common practice by most promoters. According to the disclosures made to exchanges, it's revealed that promoters purchase more stake when they see value or plan any positive developments in the near-future.

Some market veterans feel that promoters take advantage of such dire situations and use the opportunity for buybacks especially when the stock trades below its fair value. Many stocks have seen significant corrections, some have even crashed over 50 percent as coronavirus outbreak has brought the country to a standstill.

The highest quantum of stake buying is being seen in the Tata Group of companies like Tata Steel, Tata Power, Indian Hotels, among others.